Comparison of Palit GeForce GTX 1080 Dual video card vs ZOTAC GAMING GeForce GTX 1660 Ti 6GB GDDR6 video card by specifications and benchmarks. Palit GeForce GTX 1080 Dual runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card ZOTAC GAMING GeForce GTX 1660 Ti 6GB GDDR6 runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.